Round Spiral Ducts

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Zinger Sheet Metal offers single wall and double wall spiral round duct work for many applications.  We are very well equipped to handle any size project.  We have experience building duct and fittings from 4” diameter up to 72” diameter.

Construction Standards

  • SMACNA Standards (+2 to +10” WG,  -2”,  -4”, -6”, -10” WG)
  • Customer Specific Standards

Available Materials

  • Galvanized G60 and G90
  • Galvaneal (Paint Grip)
  • Aluminum
  • 304 Stainless Steel
  • 316 Stainless Steel
  • Polyvinyl Coated Steel (PCD, PVS)

Optional Liner

  • Fiberglass Spiral Duct Liner 1”, 1-1/2”, and 2” thickness
  • Elastomeric Liner 1” thickness
  • Owens Corning Quiet R Spiral Duct Liner
  • Double Wall 1”, 1-1/2”, and 2” thickness
    • Perforated inner with fiberglass insulation
    • Solid inner with fiberglass insulation
    • Optional Mylar Facing

Connectors

  • Slip Fit & Couplings
  • DuraFlange
  • AccuFlange
  • Bead and Crimp
  • Angle Ring (companion flange)
  • Vanstone